Landcare Research - Manaaki Whenua

Landcare-Research -Manaaki Whenua


Reasons why you may not be able to run our interactive keys:

You don’t have Java installed

Your computer must have Java Virtual Machine (JVM) installed for our keys to run (version 1.4.2 or later). JVM is also referred to as Java Runtime Environment (JRE) or Java for short. This is the most common problem for first-time users.

Our Lucid keys run on modern Java-enabled web browsers, e.g., Internet Explorer (IE5 and above), Firefox (3 and above), Opera (4 and above), Safari (XX and above) and Google Chrome. They will run under Windows 2000/XP/Vista, Macintosh OS X, Linux and Solaris operating systems. The purpose of JVM is to extend the capability of the web browser. Our Lucid keys use Java applets, small self-contained programs that operate within the browser.

If Java is not installed, the key will not load and your screen may look like this:


 Or this:


Java is widely-used and usually easy to install. To check if Java is installed on your computer and to update it, go to:

Some workplaces have restrictions on installing software so you may need to see your IT department for permission and help with installing Java.

topJava security warning

When trying to run our interactive keys, newer versions of Java display a security warning dialog box such as this:

Java Security Warning popup

 Chose "Run" to load our keys if you are comfortable to do so.

Your internet connection is slowtop

A broadband connection is recommended as dial-up internet will be too slow to operate the key satisfactorily.

Be patient on start-up!

With an average broadband connection, allow up to 45 seconds for the key to load. The key will start to open with an empty screen with the word ‘Done’ at lower left. Then a small window will appear saying ‘Opening Key’, followed by the four panes of the Lucid key. A correctly loaded key looks like this:


Internet Explorer is blocking active contenttop

If you are using Internet Explorer (IE), you may need to allow active content. Internet Explorer, by default, blocks active content like Java applets. The screen looks like this:


Once you have agreed to allow the Lucid key to run, IE should remember this and not give you this message when you next open the same key.

Pop-up blockerstop

IE and other browsers may have pop-up blockers which can prevent the interactive content of our keys working (such as images opening in a new window). You may need to set your pop-up blocker to allow this content to display.

The key doesn’t load properlytop

Sometimes the key may be only partly visible. For instance, the feature names and taxon names may be invisible and you will see this:


 Or there may be nothing within the four panes:


The best solution to this kind of display problem is to try restarting the key using the button bar or, if that fails, close your browser, open it again and reload the key.


If a key is not operating for you, check the following:

  1. Test the version of Java you are using. Note that JVM 1.6.11 (Version 6, Update 11) contains a bug that affects the Lucid Applet Player, and you will need to upgrade to a newer version to avoid this issue.
  2. Are other Landcare Research Lucid keys (Coprosma Key, NZGrass Key, School Key, Weeds Key) working for you? If only one is not working, please notify us through the email contact address provided on the home page of each key.
  3. Are non-Landcare Research online Lucid keys working for you? Test these Java-driven examples: Neotropikey, or the Key to cultivated pines. If they are working but our Landcare Research keys are not, the problem may lie with our servers. Please notify us.
  4. Are any of these keys working for you? If not, test this key server (Java-free) example: Australian Tropical Rainforest Orchids. If this works and nothing else above runs, then you have an issue with Java.
  5. Does your workplace block you installing programs such as Java on your computer? Are you able to run Lucid keys from your home computer? If yes, you’ll have to negotiate with your IT department for work access.